| 19 | | || node1-1 || !WiFi/WiMAX || ''none'' || |
| 20 | | || node1-2 || !WiFi/WiMAX || ''none'' || |
| 21 | | || node1-3 || !WiFi/WiMAX || USRP || |
| 22 | | || node1-4 || !WiFi/WiMAX || USRP || |
| 23 | | || node1-5 || !WiFi/WiMAX || USRP || |
| 24 | | || node1-6 || !WiFi/WiMAX || USRP || |
| 25 | | || node1-7 || !WiFi/WiMAX || LTE Client || |
| 26 | | || node1-8 || !WiFi/WiMAX || LTE Client || |
| 27 | | || node1-9 || !WiFi/WiMAX || LTE Client || |
| 28 | | || node2-1 || ''none'' || ''none'' || |
| | 19 | || node1-1 || !WiFi/WiMAX || ''none'' || |
| | 20 | || node1-2 || !WiFi/WiMAX || ''none'' || |
| | 21 | || node1-3 || !WiFi/WiMAX || USRP || |
| | 22 | || node1-4 || !WiFi/WiMAX || USRP || |
| | 23 | || node1-5 || !WiFi/WiMAX || USRP || |
| | 24 | || node1-6 || !WiFi/WiMAX || USRP || |
| | 25 | || node1-7 || !WiFi/WiMAX || LTE Client || |
| | 26 | || node1-8 || !WiFi/WiMAX || LTE Client || |
| | 27 | || node1-9 || !WiFi/WiMAX || LTE Client || |
| | 28 | || node2-1 || ''none'' || ''none'' || |
| 33 | | The RF connections of the enclosures housing the nodes as well as the antenna connections of the LTE and WiMAX base stations are all connected to the RF transceiver test system which is composed of an array of RF switches and two attenuator matrices. This system is capable of handling two completely independent topologies: one with up to 9 devices and the other with up to 5 devices, permitting a wide range of experiments to be conducted, including spectrum sharing and multi-homing. Users can configure which devices connect to which matrix and dynamically control the attenuation of each connection pair using the [wiki:/Software/eAM/mInstr Instrumentation AM] service. |
| | 33 | The RF connections of the enclosures housing the nodes as well as the antenna connections of the LTE and WiMAX base stations are all connected to the RF transceiver test system which is composed of an array of RF switches and two attenuator matrices. This system is capable of handling two completely independent topologies: one with up to 9 devices and the other with up to 5 devices, permitting a wide range of experiments to be conducted, including spectrum sharing and multi-homing. Users can configure which devices connect to which matrix and dynamically control the attenuation between each pair of ports using the [wiki:/Software/eAM/mInstr Instrumentation AM] service. The "default connection" referred to in the following tables and diagrams is the default configuration of sandbox 4 when it is "reset" using this service. |
| | 34 | |
| | 35 | The system is designed to provide as many different types of experimental topologies as possible. For example, the user can "swap out" 2 of the nodes for LTE basestations to run handover experiments. Multi-homing experiments can be conducted with !WiFi connections running through one matrix and LTE connections through the other matrix. Spectrum sharing experiments can be done with WiMAX and !WiFi connections on the same matrix. Commercial LTE base stations and clients can be connected to the same matrix as USRPs running OAI (Open Air Interface). These are just some examples of the possibilities. |
| | 36 | |
| | 37 | '''IMPORTANT:''' A device can only be connected to a ''SINGLE'' matrix at a time (eg. you can ''NOT'' connect the USRP of node1-3 to both matrix 1 and matrix 2. You can however have node1-3 !WiFi/WiMAX connected to matrix 1 and node1-3 USRP connected to matrix 2). |
| 44 | | || 1 || node1-1 : !WiFi/WiMAX || LTE BS (LTE-03) || |
| 45 | | || 2 || node1-2 : !WiFi/WiMAX || LTE BS (LTE-04) || |
| 46 | | || 3 || node1-3 : !WiFi/WiMAX || node1-3 : USRP || |
| 47 | | || 4 || node1-4 : !WiFi/WiMAX || node1-4 : USRP || |
| 48 | | || 5 || node1-5 : !WiFi/WiMAX || node1-5 : USRP || |
| 49 | | || 6 || node1-6 : !WiFi/WiMAX || node1-6 : USRP || |
| 50 | | || 7 || node1-7 : !WiFi/WiMAX || node1-7 : LTE Client || |
| 51 | | || 8 || node1-8 : !WiFi/WiMAX || WiMAX BS (WMX-03) || |
| 52 | | || 9 || node1-9 : !WiFi/WiMAX || WiMAX BS (WMX-04) || |
| | 48 | || 1 || node1-1 : !WiFi/WiMAX || LTE BS (LTE-03) || |
| | 49 | || 2 || node1-2 : !WiFi/WiMAX || LTE BS (LTE-04) || |
| | 50 | || 3 || node1-3 : !WiFi/WiMAX || node1-3 : USRP || |
| | 51 | || 4 || node1-4 : !WiFi/WiMAX || node1-4 : USRP || |
| | 52 | || 5 || node1-5 : !WiFi/WiMAX || node1-5 : USRP || |
| | 53 | || 6 || node1-6 : !WiFi/WiMAX || node1-6 : USRP || |
| | 54 | || 7 || node1-7 : !WiFi/WiMAX || node1-7 : LTE Client || |
| | 55 | || 8 || node1-8 : !WiFi/WiMAX || WiMAX BS (WMX-03) || |
| | 56 | || 9 || node1-9 : !WiFi/WiMAX || WiMAX BS (WMX-04) || |
| 63 | | || 1 || LTE BS (LTE-03) || node1-3 : !WiFi/WiMAX || |
| 64 | | || 2 || node1-3 : USRP || node1-4 : !WiFi/WiMAX || |
| 65 | | || 3 || node1-4 : USRP || node1-5 : !WiFi/WiMAX || |
| 66 | | || 4 || node1-5 : USRP || node1-8 : LTE Client || |
| 67 | | || 5 || node1-6 : USRP || node1-9 : LTE Client || |
| | 67 | || 1 || LTE BS (LTE-03) || node1-3 : !WiFi/WiMAX || |
| | 68 | || 2 || node1-3 : USRP || node1-4 : !WiFi/WiMAX || |
| | 69 | || 3 || node1-4 : USRP || node1-5 : !WiFi/WiMAX || |
| | 70 | || 4 || node1-5 : USRP || node1-8 : LTE Client || |
| | 71 | || 5 || node1-6 : USRP || node1-9 : LTE Client || |
| 71 | | Additionally, there are 3 nodes with All of the antenna ports of in each node are connected to a power combiner and fed through the enclosure access port to the outside SMA connector which is wired to one of the input/output ports of the [http://www.jfwindustries.com/documents/50PMA-012_specsheet.pdf RF Transceiver Test System] from [http://www.jfwindustries.com JFW Industries]. This configuration enables fairly tight control of RF attenuation matrix between the nodes. Four of the RF test system ports are shared between nodes and basestations (node1-1 and node1-2 are sharing their port with LTE baestations while node1-8 and node1-9 are sharing their ports with WiMAX basestations). The topology (including pairwise attenuation between ports and selection switches for node/basestation) is controlled through the [http://omf.mytestbed.net OMF] based [wiki:/Software/eAM/mInstr Instrumentation AM]. |
| 72 | | |
| 73 | | || [[Image(SB4.png, 700px, align=center)]] || [[Image(IMG_0376.jpg, 200px)]] || |
| 74 | | |
| 75 | | As can be seen in figure 1, there are a total of nine (9) input/output ports on the transceiver test system. The first 7 input/output ports are connected to nodes 1 thru 7, respectively while the 8th and 9th input/output ports are connect to either nodes 1-8 and 19 or the two Wimax base stations (BS1 and BS2). The selection of devices attached to ports 8 and 9 is controlled by the ''selDevice'' command of the [wiki:/Software/eAM/mInstr Instrumentation AM] service. |
| 76 | | |
| 77 | | || RF Test System Port || Attached device || |
| 78 | | || 1 || node1-1 || |
| 79 | | || 2 || node1-2 || |
| 80 | | || 3 || node1-3 || |
| 81 | | || 4 || node1-4 || |
| 82 | | || 5 || node1-5 || |
| 83 | | || 6 || node1-6 || |
| 84 | | || 7 || node1-7 || |
| 85 | | || 8 || node1-8 or wimax BS1 || |
| 86 | | || 9 || node1-9 or wimax BS2 || |
| 87 | | |
| 88 | | This configuration creates two distinct set of RF paths that are used to create various topologies. |
| 89 | | |
| 90 | | ===== Node to Node RF Path ===== |
| 91 | | |
| 92 | | s12 parameters taken with Agilent ENA RF Network Analyzer E5070; instrument dynamic range of 110 dB limits the accuracy of large attenuation results. |
| 93 | | |
| 94 | | [[Image(SB4-Equiv-WiFi.jpg)]] |
| 95 | | |
| 96 | | |
| 97 | | || [[Image(S12-A-24.jpg, 250px)]] || [[Image(S12-A-25.jpg, 250px)]] || [[Image(S12-A-52.jpg, 250px)]] || |
| 98 | | |
| 99 | | ===== Node to WiMAX basestation RF Path ===== |
| 100 | | |
| 101 | | [[Image(SB4-Equiv-WiMAX.jpg)]] |
| 102 | | |
| 103 | | [[Image(S12-B-25.jpg, 400px)]] |
| | 76 | TODO |
